The tough-yet-fragile physical properties of the tadpole-shaped pieces of glass known as Prince Rupert’s drops have puzzled physicists for as long as, well, there have been physicists. Bash the head with a hammer, and a drop gets barely a scratch. But break off its thin tail, and it shatters into fine powder.

Researchers long ago realized that the strength of the drops - named for Prince Rupert of Bavaria, who presented five of them to Britain’s King Charles II in 1660 - has something to do with stresses in the glass created when a drop is made by letting a blob of molten glass fall into water, so that it cools rapidly.

Twenty years ago, a pair of researchers took high-speed video of a drop disintegrating showing that, when the tail is brok ...

This is the Wilson's bird-of-paradise, found exclusively on the tiny islands of Waigeo and Batanta in the Raja Ampat archipelago of West Papua. That turquoise cap isn't made of feathers - it's actually a patch of very brightly coloured bald skin.

Although I'm a guy, I enjoyed watching this video. I also appreciate a modestly-dressed woman

At only eights years-old, Zion Harvey is the youngest person with a double hand transplant ever. Four teams of surgeons worked over 11 hours to complete the complicated operation. Zion lost both of his hands and feet when he contracted sepsis at age two and experienced multiple organ failures. When he was four, he received a kidney transplant from his mother, and leg prosthetics have enabled him to engage in many activities.

Would someone feel more calm after seeing the colour blue? Or perhaps they would feel more aggressive after having seen the colour red?

Swiss psychiatrist, Max Lüscher, had completed a study in the 20th century that linked colour preference to your personality and your mental state. His belief was further hardwired after an experiment concluded that 151 out of 153 people were weaker after looking at the pink card, when compared to how strong they were when they had looked at the blue card.

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As this hawk-moth feeds on flowers and makes a similar humming sound, it looks a lot like a hummingbird. What’s interesting is that it is surprisingly good at learning colors.

It's true, and this estimate is the same for tomorrow, and the day after. This video explains the Years of Life Lost measurement - a measurement which takes into account the age at which deaths occur by giving greater weight to deaths at younger age and lower weight to deaths at older age (more information can be found here). The video neatly displays the leading causes of death in each country from 2013. According to statistics, Saudi Arabia really needs to chill out with its driving antics given that death by vehicle is the leading cause of early death there at 19 people per day!

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